CAJ | 학술논문

综述用离子束技术研究稀磁半导体和纳米磁性材料的构建、调控和改性的进展和现状.离子束注入是优选的构建和调控方法,测试结果表明在GaN和ZnO等新半导体光电材料中注入Mn、Ni和Co等过渡金属离子可得到低温和室温下的铁磁性.离子束分析技术给出这些新材料薄膜的微结构信息,透射电镜下观察到过饱和剂量Mn~+注入GaN形成的纳米磁性颗粒.
종술용리자속기술연구희자반도체화납미자성재료적구건、조공화개성적진전화현상.리자속주입시우선적구건화조공방법,측시결과표명재GaN화ZnO등신반도체광전재료중주입Mn、Ni화Co등과도금속리자가득도저온화실온하적철자성.리자속분석기술급출저사신재료박막적미결구신식,투사전경하관찰도과포화제량Mn~+주입GaN형성적납미자성과립.
In this paper,we focus on constitution,magnetism modification and characterization of GaN-based materials using ion beam technology and formation of the nano structure by implanting Mn~+ or Co~+ ion of different doses into the film samples.SQUID and AGM were used to measure the magnetic properties,such as coercivity and saturation magnetization,for the samples before and after annealing,M-H and M-T curves showed ferromagnetism in the films at both low temperature and room temperature.RBS/C,PIXE and XRD were used to analyze the microstmcture,content of doping transition metal and damage.The nano-cluster of ferromagnetism particle was observed under HRTEM.